High Quality Content by WIKIPEDIA articles! DTS, Inc. (formerly known as Digital Theater Systems, Inc.) (NASDAQ: DTSI), is a company specialising in multichannel digital surround sound formats used for both commercial/theatrical and consumer grade applications. It is used for in-movie sound on film, DVD, CD, HD DVD and Blu-ray Disc. During the last few years of the Laserdisc format's existence, several releases had DTS soundtracks.